Search a number
-
+
71141973 = 373471471
BaseRepresentation
bin1000011110110…
…00101001010101
311221212101102220
410033120221111
5121203020343
611020452553
71522461000
oct417305125
9157771386
1071141973
1137181021
121b9aa159
131197b556
14963c537
1563a4183
hex43d8a55

71141973 has 32 divisors (see below), whose sum is σ = 113049600. Its totient is φ = 39760560.

The previous prime is 71141933. The next prime is 71142037. The reversal of 71141973 is 37914117.

It is not a de Polignac number, because 71141973 - 221 = 69044821 is a prime.

It is a super-2 number, since 2×711419732 = 10122360644665458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71141933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47628 + ... + 49098.

It is an arithmetic number, because the mean of its divisors is an integer number (3532800).

Almost surely, 271141973 is an apocalyptic number.

It is an amenable number.

71141973 is a deficient number, since it is larger than the sum of its proper divisors (41907627).

71141973 is a wasteful number, since it uses less digits than its factorization.

71141973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542 (or 1528 counting only the distinct ones).

The product of its digits is 5292, while the sum is 33.

The square root of 71141973 is about 8434.5701135268. The cubic root of 71141973 is about 414.3575932074.

The spelling of 71141973 in words is "seventy-one million, one hundred forty-one thousand, nine hundred seventy-three".

Divisors: 1 3 7 21 47 49 141 147 329 343 987 1029 1471 2303 4413 6909 10297 16121 30891 48363 69137 72079 207411 216237 483959 504553 1451877 1513659 3387713 10163139 23713991 71141973